Land Rover Discovery: Transmission Fluid Drain and Refill (G1660818) / General Procedures

GENERAL EQUIPMENT

PART(S)

DRAINING

WARNINGS:

• Be prepared to collect escaping fluids.
• Observe due care when draining, as the fluid can be very hot.

CAUTIONS:

• Make sure that the area around the component is clean and free of foreign material.
• Vehicle must be horizontal during this operation.
• Before disconnecting any components, make sure the area is clean and free from foreign material. When disconnected all openings must be sealed

NOTE:

• This procedure contains some variation in the illustrations depending on the vehicle specification, but the essential information is always correct.
• This procedure contains illustrations showing certain components removed to provide extra clarity.

1. The following steps must be observed before starting the transmission drain and refill.
2. Make sure that the electric park brake (EPB) is applied.
3. Make sure the transmission control switch (TCS) is in the Park (P) position.
4. Do not start the engine.

Raise and support the vehicle on a suitable 2 post lift.

Refer to: Lifting (100-02 Jacking and Lifting, Description and Operation).

Remove the front left wheel and tire.

Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

Remove the engine undershield.

Refer to: Engine Undershield (501-02 Front End Body Panels, Removal and Installation).

CAUTION:

The ambient temperature should not be below 20 degrees celsius.

Remove and discard the drain plug and allow the fluid to drain until the flow stops.

Renew Part: Transfer case drain plug.

Install a new transmission fluid drain plug.

Torque: 35 Nm

• Remove the transmission fluid level plug, do not discard.

Fill the transmission with 3.5 litres of the correct specification oil through transmission fluid level plug hole using a suitable syringe.

Refer to: Specifications (307-01 Automatic Transmission/Transaxle, Specifications).

General Equipment: Oil syringe

Allow the transmission fluid to drain from the transmission fluid level plug hole until the flow almost stops to a trickle.

Install the original transmission fluid level plug.

Torque: 35 Nm

CAUTION:

Using Land Rover approved diagnostic equipment, make sure the transmission temperature is between 35ºC (95ºF) 45ºC (113ºF) before starting the fluid level check

1. The following steps must be observed before starting the transmission fluid level check.

• Connect Land Rover approved diagnostic equipment to vehicle.

General Equipment: Land Rover diagnostic equipment

• Start the engine and allow to idle.
• Switch off the air conditioning (A/C) system and other electrical components.
• Make sure that the transmission is not in the default mode, if this is the case, stop and correct the cause first and then restart the fluid level check.

CAUTION:

Make sure the hydraulic control system is filled with oil.

• Apply and hold the brake pedal.
• Select reverse gear and wait for 10 seconds.
• Select drive, then manual 1st gear and wait for 10 seconds.
• Select 2nd gear and wait for 10 seconds.
• Select Park (P) on the TCS.

CAUTION:

Make sure the park position is selected before carrying out the transmission hydraulic system fill process.

NOTE:

Make sure the transmission hydraulic system is completely filled with oil.

• Raise the engine speed to 2000 rpm and hold for 30 seconds.

  Then return to idle speed.

NOTE:

After completing the preparation, proceed to the actual transmission fluid level check.

• If the transmission oil temperature is lower than 35ºC (95ºF).

  Allow the transmission to warm up above 35ºC (95ºF) with the engine idling in the P position, then proceed with the transmission fluid level check.

• If the transmission oil temperature is above 45ºC (113ºF), switch off the engine and allow the transmission to cool down, then restart the fluid level check.

CAUTION:

Only continue with the fluid level check if the transmission temperature is between 35ºC (95ºF) 45ºC (113ºF).

• Start the engine, if not already idling.
• Maintain the engine idle speed.

CAUTION:

Drain the fluid into a suitable container.

• Remove the transmission fluid level plug, do not discard.

CAUTION:

Transmission fluid temperature must not exceed 45 degrees celsius.

NOTE:

With the engine running a small amount of automatic transmission fluid should trickle out of the transmission fluid level plug hole.

1. If fluid flows out, proceed to step 19.
2. If fluid does not flow out, proceed to step 18.

1. If the transmission fluid does not come out of the transmission fluid level plug hole the transmission fluid level is insufficient. If this is the case add the transmission fluid in 100 millilitre units into the transmission fluid level plug hole using a suitable syringe.

General Equipment: Oil syringe

2. Allow the transmission fluid to drain from the transmission fluid level plug hole until the flow almost stops to a trickle.

Install the original transmission fluid level plug.

Torque: 35 Nm

Switch off the engine.

Switch off the engine.

Remove the container.

Install the engine undershield.

Refer to: Engine Undershield (501-02 Front End Body Panels, Removal and Installation).

Install the front left wheel and tire.

Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

Disconnect the Land Rover approved diagnostic tool from the vehicle.

General Equipment: Land Rover diagnostic equipment

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